.steel-penny-guide * {
  box-sizing: border-box;
}

.steel-penny-guide {
  margin: 0;
  background: #0b1320;
  color: #d9e3ef;
  font: 17px/1.8 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}

.steel-penny-guide {
  max-width: 1020px;
  margin: auto;
  padding: 40px 30px 80px;
}

.steel-penny-guide h1,
.steel-penny-guide h2,
.steel-penny-guide h3 {
  color: #fff;
  line-height: 1.3;
}

.steel-penny-guide h1 {
  font-size: 42px;
  letter-spacing: -.025em;
}

.steel-penny-guide h2 {
  font-size: 28px;
  margin: 0 0 22px;
}

.steel-penny-guide h3 {
  font-size: 21px;
  margin: 28px 0 12px;
}

.steel-penny-guide section {
  margin: 48px 0;
}

.steel-penny-guide p {
  margin: 0 0 20px;
}

.steel-penny-guide li {
  margin: 10px 0;
}

.steel-penny-guide a {
  color: #b9d7fc;
}

.steel-penny-guide a:hover {
  text-decoration-thickness: 2px;
}

.steel-penny-guide a:focus-visible,
.steel-penny-guide summary:focus-visible {
  outline: 2px solid #f2cc88;
  outline-offset: 5px;
}

.steel-penny-guide .draft {
  font-size: 13px;
  color: #e6c288;
  letter-spacing: .08em;
}

.steel-penny-guide .dek {
  font-size: 21px;
  color: #b5c6d8;
}

.steel-penny-guide .panel {
  padding: 26px;
  background: #142238;
  border: 1px solid #34485f;
  border-radius: 14px;
}

.steel-penny-guide .panel p:last-child {
  margin-bottom: 0;
}

.steel-penny-guide .table-wrap {
  overflow-x: auto;
}

.steel-penny-guide table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.steel-penny-guide th,
.steel-penny-guide td {
  padding: 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid #34485f;
}

.steel-penny-guide th {
  color: #fff;
}

.steel-penny-guide caption {
  text-align: left;
  color: #b5c6d8;
  margin-bottom: 12px;
}

.steel-penny-guide code {
  color: #f2cc88;
  font-family: ui-monospace,SFMono-Regular,Consolas,monospace;
  white-space: nowrap;
}

.steel-penny-guide small,
.steel-penny-guide .note {
  font-size: 14px;
  color: #b5c6d8;
}

.steel-penny-guide details {
  border: 1px solid #34485f;
  border-radius: 12px;
  padding: 20px;
}

.steel-penny-guide summary {
  cursor: pointer;
  font-weight: 700;
  color: #fff;
}

.steel-penny-guide details ol {
  margin-bottom: 0;
}

.steel-penny-guide section {
  scroll-margin-top: 25px;
}

@media (max-width:600px) {
  .steel-penny-guide {
    padding: 24px 18px 50px;
  }

  .steel-penny-guide h1 {
    font-size: 32px;
  }

  .steel-penny-guide h2 {
    font-size: 25px;
  }

  .steel-penny-guide .panel {
    padding: 20px;
  }

  .steel-penny-guide th,
  .steel-penny-guide td {
    min-width: 125px;
    padding: 10px;
  }
}

.steel-penny-guide .serial-gallery {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: 24px;
}

.steel-penny-guide .serial-example {
  min-width: 0;
  margin: 0;
  padding: 20px;
  background: #142238;
  border: 1px solid #34485f;
  border-radius: 14px;
}

.steel-penny-guide .serial-example h4 {
  font-size: 19px;
  line-height: 1.4;
  color: #fff;
  margin: 0 0 8px;
}

.steel-penny-guide .serial-example .note {
  margin-bottom: 16px;
}

.steel-penny-guide .image-link {
  display: block;
  cursor: zoom-in;
}

.steel-penny-guide .serial-example img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  max-width: 560px;
  margin: auto;
  border-radius: 6px;
}

.steel-penny-guide .serial-example figcaption {
  font-size: 15px;
  line-height: 1.7;
  margin-top: 18px;
}

.steel-penny-guide .serial-example figcaption p:last-child {
  margin-bottom: 0;
}

.steel-penny-guide .full-serial {
  font-family: ui-monospace,SFMono-Regular,Consolas,monospace;
  color: #f2cc88;
  font-weight: 700;
  letter-spacing: .04em;
  margin-bottom: 10px;
}

.steel-penny-guide .real-examples {
  margin: 30px 0 36px;
}

@media (max-width:760px) {
  .steel-penny-guide .serial-gallery {
    grid-template-columns: 1fr;
  }

  .steel-penny-guide .serial-example {
    padding: 18px;
  }
}

.steel-penny-guide {
  max-width: 1260px;
}

.steel-penny-guide .article-layout {
  display: grid;
  grid-template-columns: 230px minmax(0,1fr);
  gap: 38px;
  align-items: start;
}

.steel-penny-guide .article-layout article {
  min-width: 0;
}

.steel-penny-guide .article-layout aside {
  position: sticky;
  top: 24px;
  padding-top: 48px;
}

.steel-penny-guide .toc {
  background: #1c2e44;
  border: 1px solid #34485f;
  border-radius: 12px;
  padding: 20px 14px;
}

.steel-penny-guide .toc strong {
  display: block;
  font-size: 11px;
  letter-spacing: .14em;
  color: #b5c5d8;
  padding: 0 10px 10px;
}

.steel-penny-guide .toc ol {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: calc(100vh - 180px);
  overflow: auto;
  scrollbar-width: thin;
}

.steel-penny-guide .toc li {
  margin: 3px 0;
}

.steel-penny-guide .toc a {
  display: block;
  padding: 9px 10px;
  border-radius: 5px;
  text-decoration: none;
  font-size: 13px;
  line-height: 1.5;
}

.steel-penny-guide .toc a[aria-current=location] {
  background: #2c4867;
  color: #fff;
  font-weight: 700;
}

.steel-penny-guide .toc-sub a {
  padding-left: 22px;
  font-size: 12px;
}

.steel-penny-guide .mobile-toc {
  display: none;
}

.steel-penny-guide .context-figure {
  margin: 24px auto;
  max-width: 640px;
  min-width: 0;
}

.steel-penny-guide .context-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 8px;
}

.steel-penny-guide .context-figure figcaption {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 12px;
}

.steel-penny-guide .context-figure figcaption strong {
  color: #f2cc88;
}

.steel-penny-guide .context-figure figcaption p {
  margin: 5px 0 0;
}

.steel-penny-guide .evidence-grid {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: 22px;
  margin: 24px 0;
}

.steel-penny-guide .evidence-grid .context-figure {
  margin: 0;
}

.steel-penny-guide h3[id] {
  scroll-margin-top: 24px;
}

@media (max-width:960px) {
  .steel-penny-guide .article-layout {
    display: block;
  }

  .steel-penny-guide .article-layout aside {
    display: none;
  }

  .steel-penny-guide .mobile-toc {
    display: block;
    margin: 30px 0;
  }

  .steel-penny-guide .mobile-toc .toc {
    border: 0;
    padding: 14px 0 0;
    background: none;
  }

  .steel-penny-guide .mobile-toc .toc strong {
    display: none;
  }

  .steel-penny-guide .mobile-toc .toc ol {
    max-height: 55vh;
  }
}

@media (max-width:600px) {
  .steel-penny-guide .evidence-grid {
    grid-template-columns: 1fr;
  }
}

.steel-penny-guide .table-wrap:focus-visible {
  outline: 2px solid #f2cc88;
  outline-offset: 4px;
}

.steel-penny-guide .article-layout a:focus-visible,
.steel-penny-guide .mobile-toc summary:focus-visible {
  outline: 2px solid #f2cc88;
  outline-offset: 3px;
}

.steel-penny-guide h2,
.steel-penny-guide h3,
.steel-penny-guide h4,
.steel-penny-guide figcaption,
.steel-penny-guide p {
  overflow-wrap: break-word;
}

.steel-penny-guide .example-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.steel-penny-guide .example-grid .context-figure {
  margin: 0;
  max-width: none;
}

.steel-penny-guide .example-grid figcaption {
  font-size: 14px;
}

.steel-penny-guide .panel>.context-figure {
  margin: 20px auto;
}

.steel-penny-guide .panel h3:first-child {
  margin-top: 0;
}

.steel-penny-guide h3[id] {
  scroll-margin-top: 25px;
}

.steel-penny-guide header {
  padding-bottom: 24px;
  border-bottom: 1px solid #34485f;
}

.steel-penny-guide .table-wrap:focus-visible {
  outline: 2px solid #f2cc88;
  outline-offset: 4px;
}

@media (max-width:760px) {
  .steel-penny-guide .example-grid {
    grid-template-columns: 1fr;
  }
}

.steel-penny-guide .mint-grid {
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  gap: 18px;
}

.steel-penny-guide .mint-grid .context-figure {
  margin: 0;
}

.steel-penny-guide .mint-grid figcaption {
  text-align: center;
}

.steel-penny-guide .app-module {
  display: grid;
  grid-template-columns: minmax(0,1fr) 220px;
  gap: 28px;
  align-items: start;
}

.steel-penny-guide .app-module .context-figure {
  margin: 0;
}

.steel-penny-guide .example-grid img {
  max-width: 350px;
  margin: auto;
}

.steel-penny-guide .context-figure img {
  border-radius: 0;
}

.steel-penny-guide .phone img {
  border-radius: 12px;
}

@media (max-width:760px) {
  .steel-penny-guide .mint-grid,
  .steel-penny-guide .app-module {
    grid-template-columns: 1fr;
  }

  .steel-penny-guide .mint-grid .context-figure {
    max-width: 300px;
    margin: auto;
  }

  .steel-penny-guide .phone {
    max-width: 220px;
  }
}

.steel-penny-guide .test-gallery {
  display: grid;
  grid-template-columns: repeat(3,minmax(0,220px));
  justify-content: center;
  gap: 22px;
  margin: 24px 0;
}

.steel-penny-guide .test-gallery figure {
  margin: 0;
  min-width: 0;
}

.steel-penny-guide .test-gallery img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
}

@media (max-width:760px) {
  .steel-penny-guide .test-gallery {
    grid-template-columns: minmax(0,240px);
  }
}
.steel-penny-guide{background:transparent;padding-top:130px}.steel-penny-guide section,.steel-penny-guide h3[id]{scroll-margin-top:120px}.steel-penny-guide .article-layout aside{top:100px;padding-top:20px}.steel-penny-guide .toc ol{max-height:calc(100vh - 210px)}@media(max-width:600px){.steel-penny-guide{padding-top:110px}}

.steel-penny-guide .context-figure figcaption{text-align:center}

.page-params-pending body{visibility:hidden}

.quarter-guide{padding-top:20px}.quarter-guide .panel{margin:24px 0}.quarter-guide .panel h3{margin-top:0}.quarter-guide .panel p+p{margin-top:16px}.quarter-guide .three-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:24px;font-size:14px}.quarter-guide .three-points b{display:block;color:#fff}.quarter-guide .photo{margin:24px auto;max-width:640px;overflow:hidden;border:1px solid #34485f;border-radius:12px;background:#142238}.quarter-guide .photo img{display:block;width:100%;height:auto;max-width:590px;margin:auto}.quarter-guide .photo figcaption{padding:18px;text-align:center;font-size:14px}.quarter-guide .photo figcaption strong{display:block;color:#e6c288;margin-bottom:8px}.quarter-guide .steps{list-style:none;padding:0}.quarter-guide .steps li{position:relative;padding-left:42px;margin:24px 0}.quarter-guide .steps b{display:block;color:white}.quarter-guide .steps .n{position:absolute;left:0;color:#e6c288}.quarter-guide .faq-item{margin:30px 0}.quarter-guide .link-list{padding-left:22px}.quarter-guide .link-description{font-size:14px;color:#b5c6d8}.quarter-guide .toggle-hint,.quarter-guide .toggle-icon{display:none}.quarter-guide .references-content{margin-top:22px}.image-zoom{display:block;width:100%;padding:0;border:0;background:white;cursor:zoom-in}.image-zoom:focus-visible{outline:3px solid #e6c288;outline-offset:-3px}.coin-zoom-dialog{max-width:94vw;width:700px;max-height:90vh;background:#142238;color:#d9e3ef;border:1px solid #34485f;border-radius:12px;padding:20px}.coin-zoom-dialog::backdrop{background:#000c}.coin-zoom-dialog img{display:block;max-width:100%;height:auto;margin:20px auto}.coin-zoom-dialog button{background:#243b58;color:white;padding:8px 16px;border:1px solid #b5c6d8;border-radius:6px;cursor:pointer}.coin-zoom-caption{font-size:14px}@media(max-width:900px){.quarter-guide{padding-top:20px}}@media(max-width:600px){.quarter-guide .three-points{grid-template-columns:1fr}.quarter-guide .panel{padding:20px}}


/* Reading polish: reuse the official chrome; fewer boxed interruptions. */
.quarter-guide{max-width:1200px;padding-inline:30px}.quarter-guide #article-heading{padding-bottom:30px}.quarter-guide h1{max-width:1040px;font-size:clamp(2rem,3.4vw,2.75rem);line-height:1.22;margin:22px 0}.quarter-guide .dek{max-width:960px;font-size:19px;line-height:1.7;margin-bottom:20px}.quarter-guide .article-layout{grid-template-columns:210px minmax(0,1fr);gap:44px}.quarter-guide .article-layout article{font-size:17px;line-height:1.85}.quarter-guide section{margin:42px 0;padding-bottom:36px;border-bottom:1px solid #34485f}.quarter-guide section:last-child{border-bottom:0}.quarter-guide h2{font-size:28px;line-height:1.35;margin-bottom:22px}.quarter-guide h3{font-size:21px;line-height:1.45;margin:28px 0 12px}.quarter-guide p{margin-bottom:18px}.quarter-guide .reading-block{margin:26px 0}.quarter-guide .reading-block h3{margin-top:0}.quarter-guide .panel{padding:24px}.quarter-guide .photo{max-width:590px;margin:24px auto}.quarter-guide .photo figcaption{font-size:13px;line-height:1.65;padding:14px 18px}.quarter-guide .table-wrap{margin:24px 0;border:1px solid #34485f;border-radius:10px}.quarter-guide table{font-size:14px;min-width:560px}.quarter-guide caption{padding:14px 16px;margin:0;background:#18283d}.quarter-guide th,.quarter-guide td{padding:14px 16px;line-height:1.65}.quarter-guide thead{background:#18283d}.quarter-guide .faq-item{margin:26px 0}.quarter-guide .toc li{margin:3px 0}.quarter-guide .toc a{line-height:1.5}.quarter-guide .references{background:#142238}.quarter-guide .link-list li{padding:10px 0}.quarter-guide #summary .panel{margin-bottom:0}@media(max-width:900px){.quarter-guide .article-layout{grid-template-columns:1fr;gap:0}}@media(max-width:600px){.quarter-guide{padding-inline:20px}.quarter-guide h2{font-size:25px}.quarter-guide .dek{font-size:18px}.quarter-guide section{margin:32px 0;padding-bottom:26px}.quarter-guide .panel{padding:20px}.quarter-guide .photo figcaption strong{font-size:13px}.quarter-guide .article-layout article{font-size:16px}}

.quarter-guide .masthead-back{font-size:14px;text-decoration:none}.quarter-guide .masthead-footer{margin-top:26px}.quarter-guide .masthead-byline{display:flex;align-items:center;flex-wrap:wrap;gap:24px;font-size:14px;color:#b5c6d8}.quarter-guide .masthead-author{display:inline-flex;align-items:center;gap:10px;color:#dce7f5;text-decoration:none}.quarter-guide .masthead-author img{display:block;flex:0 0 32px;width:32px;height:32px;min-width:32px;max-width:32px;min-height:32px;max-height:32px;margin:0;border:0;border-radius:9px;object-fit:contain}.quarter-guide .masthead-updated{border-left:1px solid #ffffff30;padding-left:24px}@media(max-width:600px){.quarter-guide .masthead-byline{gap:12px 18px}.quarter-guide .masthead-updated{padding-left:0;border:0}}

.quarter-guide .masthead-title-detail{display:block;margin-top:8px;font-size:.82em;line-height:1.3;color:#b9cdea}